Our art department made a nice .pdf and .ai file of some artwork to be silkscreened onto my part.  When I try to insert this as an object onto Sheet 2 of my drawing, I get a "The Object Could Not Be Created" error.  When I convert the .pdf into a .png using Acrobat Pro I cannot insert it as an image (same error). However if I screengrab the .pdf and save as .png I can insert it, but that is horrible quality.

Any ideas on how to get this into my drawing? A search did not reveal anything.

Edit: added .pdf file if you'd like to try your hand.